Each -symbol with 2 counts as 3 instead.
Technological progress is the totality of all technical innovations of a culture. The first major change for mankind is generally considered to be the Neolithic Revolution. This includes agriculture, animal farming, stock farming and sedentariness. In more recent times, the Industrial Revolution and the Digital Revolution have been the biggest upheavals. Some experts say that the Digital Revolution will not be complete until human thinking has been completely replaced by machines.